Strange situation

I promote my site almost one year, before few weeks my add is invisible, so I test it all kind of variations, bidding, keywords ... and I notice something strange:
Big travel companies start to use MY keywords, sad but true, url of site is booking-reservation.com (see picture)



So any ides how to beat them? I can not bid over $100 per keyword (google policy) but how they can? landing page is booking-reservation.com?

Orbitz, Expedia, Hotwire etc. are companies that beat my add, so my add does not show at all anymore

Anybody have any solution?
Please help me

they have
1. higher ctr
2. better ad copy
3. better landing page
4. they are huge companies which get perferred treatment, especially if those keywords pertain to their product.